Why use iterators instead of array indices?

Question

Take the following two lines of code:

for (int i = 0; i < some_vector.size(); i++)
{
    //do stuff
}

And this:

for (som         


        

Answer 1

Both the implementations are correct, but I would prefer the 'for' loop. As we have decided to use a Vector and not any other container, using indexes would be the best option. Using iterators with Vectors would lose the very benefit of having the objects in continuous memory blocks which help ease in their access.